mineral
Milky quartz
Quartz (SiO₂)
AI-generated identification · may be incorrectLikely a rough, translucent white quartz fragment with a vitreous-to-waxy luster and no obvious cleavage. Quartz is hexagonal, Mohs hardness 7, and specific gravity about 2.65; the photo does not establish these properties conclusively.
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Physical properties
Likely a rough, translucent white quartz fragment with a vitreous-to-waxy luster and no obvious cleavage. Quartz is hexagonal, Mohs hardness 7, and specific gravity about 2.65; the photo does not establish these properties conclusively.
Formation & geological history
Quartz commonly crystallizes from silica-rich fluids in veins and cavities, and also occurs in igneous and metamorphic rocks. Its age depends on its source and cannot be determined from the image.
Uses & applications
Common quartz is used in glassmaking, electronics, and as a decorative or collecting specimen; this small rough piece has little jewelry value unless cut or polished.
Geological facts
Quartz is one of Earth’s most abundant minerals and breaks with a curved, conchoidal fracture rather than splitting along cleavage planes.
Field identification & locations
The white, translucent appearance is consistent with milky quartz, but identification from the image alone is uncertain. Check for hardness sufficient to scratch glass and lack of cleavage; quartz occurs worldwide in veins and many rock types.
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Granite
Granite (Phaneritic intrusive igneous rock)
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